<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>second</title>
</head>
<body>
	<h1>这是第二张</h1>
	<button onclick="gogogo()">执行操作</button>
	<h1>再来一张图片</h1>
	<img src="../img.jpg" alt="">
	<div class="icon-back">返回</div>
	<hr>
	<button onclick="test()">测试</button>
	<button onclick="yoyo()">goodbye</button>
	<hr>
	<button onclick="tools.hello()">class测试</button>
</body>
</html>